Title:
ELECTRONIC APPARATUS FOR DETECTING DISTANCES
Document Type and Number:
WIPO Patent Application WO/2019/150943
Kind Code:
A1
Abstract:
An electronic apparatus for detecting distances from the electronic apparatus to external objects is provided, the apparatus comprising a substrate 551, a light receiving sensor of a distance measurement sensor 523 arranged over the substrate 511, one or more light sources 521, 522 arranged over the substrate 511, a first lens 32 arranged over a first light source 522 of the one or more light sources and arranged to direct light emitted by the first light source 522, a second lens 33 arranged over the light receiving sensor and configured to direct light received by the second lens 33 onto the light receiving sensor of the distance measurement sensor 523, and a transparent member 553 arranged between the second lens 33 and the light receiving sensor and configured to transmit the light directed by the second lens 33 onto the light receiving sensor, and reflect light from at least one 521 of the one or more light sources 521, 522 onto the light receiving sensor of the distance measurement sensor 523. A printed wiring board or a printed circuit board may be used as the substrate 551. The light source unit 522 is shielded and separated from the light source unit 521 and the distance measurement sensor 523 by the lens holder 552. A space including the light source unit 521 and the distance measurement sensor 523 between the mounting surface of the substrate 551 and a reflecting surface of the cover glass 553 which faces the mounting surface of the substrate 551 is sealed by, for example, the lens holder 552 and a resin. Part of the light for reference emitted from the light source unit 521 is reflected from the cover glass 553 and part of reference light which is the reflected light is incident on the light receiving unit 43 of the distance measurement sensor 523. The distance measurement sensor 523 is a sensor that measures the distance to the object and includes a timing control circuit, a light source control circuit, the light receiving sensor including a plurality of pixels, a signal change detection circuit, and a time measurement circuit.
Inventors:
EGAWA YOSHITAKA (JP)
Application Number:
PCT/JP2019/000990
Publication Date:
August 08, 2019
Filing Date:
January 16, 2019
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S7/481; G01S17/10
Foreign References:
| US20070272882A1 | 2007-11-29 | |||
| EP3255456A1 | 2017-12-13 | |||
| US20170353649A1 | 2017-12-07 | |||
| EP0501493A2 | 1992-09-02 | |||
| DE102010038566A1 | 2012-02-02 | |||
| US20120013917A1 | 2012-01-19 | |||
| JP2008003075A | 2008-01-10 |
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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